GPRS SocketModem® Developer’s Guide
Copyright and Technical Support GPRS SocketModem Developer’s Guide MTSMC-G2, MTSMC-G2-V, MTSMC-G2-IP, MTSMC-G2-GP S000521A, Version A Copyright This publication may not be reproduced, in whole or in part, without prior expressed written permission from Multi-Tech Systems, Inc. All rights reserved. Copyright © 2011 by Multi-Tech Systems, Inc. Multi-Tech Systems, Inc.
Contents Chapter 1 – Universal Socket Connectivity ..........................................................................................5 Universal Socket Connectivity Features ........................................................................................5 Universal Socket Design ...............................................................................................................5 Universal Developer Kit Contents ......................................................................
Contents Underwriters Laboratories Required Global Positioning System (GPS) Statement....................... 27 Cellular Approvals and Labeling Requirements ...........................................................................27 Approvals and Certification ........................................................................................................... 27 Safety Notices and Warnings ......................................................................................................
Chapter 1 – Universal Socket Connectivity Multi-Tech’s embedded device networking solutions instantly add communication ability to your existing or new product with minimal engineering effort giving you an edge on your competition while accelerating your time-to-market. Our Universal Socket is a flexible comm-port architecture that provides cellular, Ethernet, PSTN or Wi-Fi network access with interchangeable communications devices.
Chapter 1 – Universal Socket Connectivity Universal Developer Kit Contents Products described in this guide can be used to develop and evaluate your products and applications using the MTSMI-UDK (Universal Developer Kit). ● ● ● ● ● ● ● ● 6 Developer Board: One MTSMI-UDK Developer Board Power Supply: One 100-240V 9V-1.
Chapter 1 – Universal Socket Connectivity Universal Socket Pin Out Top View – Universal SocketModem Pin Out Note: Not all products include all pins as shown above and listed below. See the Mechanical Drawings section in each product chapter for the pins used by that product. Universal Pin Descriptions Pin Signal Name In/Out 1 Tip I/O 2 Ring I/O 3 4 Safety Void TX+ NA O 5 TX- O 6 RX- I 7 8 RX+ Safety Void I NA 9 Dummy Description Tip Signal from Telco.
Chapter 1 – Universal Socket Connectivity Pin Signal Name In/Out 11 TCLK O 12 RCLK O 22 23 24 MIC+ MIC–RESET I I I Description Transmit Data Sync Clock. TX synchronous data clock for ISDN sync data mode. Receive Data Sync Clock. RX synchronous data clock for ISDN sync data mode. Microphone positive input. Refer to Microphone Inputs in Chapter 2. Microphone negative input. Refer to Microphone Inputs in Chapter 2. Device Reset (with pull-up).
Chapter 1 – Universal Socket Connectivity Pin Signal Name In/Out 33 –RTS I 34 –RXD O 35 –TXD I 36 –RI O 37 –DSR O 38 –CTS O 39 –DCD O 40 –DTR I 41 42 43 48 49 50 51 56 GND SPKSPK+ GPIO GPIO GPIO GPIO –LED FDX GND O O I/O I/O I/O I/O O 57 –LED ACT O Description Request to Send (Active Low). –RTS is controlled by the DTE to indicate whether or not the DTE is ready to receive data. –RTS ON (low) indicates that the DTE is ready to receive data from the modem on RXD.
Chapter 1 – Universal Socket Connectivity Pin 58 Signal Name –LEDLINK In/Out O Description high and 50ms low when active. LED LINK (Active Low). LED Output. During normal operation, this pin lights the LINK LED to indicate a good link is detected. Pin 58 LED Mode Operating Status Note: Pin 58 may or may not be available on some GPRS SocketModems currently shipping.
Chapter 1 – Universal Socket Connectivity government agencies have stringent certification requirements that must be met for use in specific environments. Proper PC board layout (component placement, signal routing, trace thickness and geometry, etc.) component selection (composition, value, and tolerance), interface connections, and shielding are required for the board design to achieve desired modem performance and to attain EMI certification.
Chapter 1 – Universal Socket Connectivity ● ● ● ● ● ● Lay out the highest frequency signal traces next to the ground grid. If a multilayer board design is used, make no cuts in the ground or power planes and be sure the ground plane covers all traces. Minimize the number of through-hole connections on traces carrying high frequency signals. Avoid right angle turns on high frequency traces. Forty-five degree corners are good; however, radius turns are better.
Chapter 1 – Universal Socket Connectivity SocketModem Developer Board This developer board drawing shows the major board components for all SocketModems. Board Revision B. Refer to the next section for a description of Board Components. Multi-Tech Systems, Inc.
Chapter 1 – Universal Socket Connectivity Board Components Jumper Description JP1 JP2 Mutes the speaker. Default positions are 1 and 2 (speaker is not muted). Ties the TX and RX clock lines together. Default positions are 1 and 2 (transmit and receive clock act independently). Sets the data rate. NORMAL sets the data rate at 250kbps. H.S. (high speed serial communications) sets the data rate at 1Mbps. Testing interface (debugging) for the RS-232 signals.
Chapter 1 – Universal Socket Connectivity SocketModem Developer Board Block Diagram Multi-Tech Systems, Inc.
Chapter 1 – Universal Socket Connectivity Developer Board Schematics Board Revision B 16 Multi-Tech Systems, Inc.
Chapter 1 – Universal Socket Connectivity Developer Board Schematics Board Revision B Multi-Tech Systems, Inc.
Chapter 1 – Universal Socket Connectivity Developer Board Schematics Board Revision B 18 Multi-Tech Systems, Inc.
Chapter 1 – Universal Socket Connectivity Developer Board Schematics Board Revision B Multi-Tech Systems, Inc.
Chapter 1 – Universal Socket Connectivity Developer Board Schematics Board Revision B 20 Multi-Tech Systems, Inc.
Chapter 1 – Universal Socket Connectivity Cellular Information Antenna System for Cellular Devices The cellular/wireless performance is completely dependent on the implementation and antenna design. The integration of the antenna system into the product is a critical part of the design process; therefore, it is essential to consider it early so the performance is not compromised.
Chapter 1 – Universal Socket Connectivity Wi-Fi RF Specifications IEEE 802.11 b/g Frequency Modulation Receiver Sensitivity Means Transmit Output Power Range 2.4000 to 2.4835 GHz OFDM & DSSS -88dBm @11Mbps -72dBm @54Mbps 14.5dBm for 802.11b 14dBm for 802.11g Up to 100 meters in free space Wi-Fi Antenna Requirements/Specifications Frequency Range Impedance VSWR Radiation TRP/TIS 2.4000 to 2.4835 GHz 50 Ohms 2.
Chapter 1 – Universal Socket Connectivity OEM Integration FCC Grant Notes The OEM should follow all the grant notes listed below. Otherwise, further testing and device approvals may be necessary. The antenna gain, including cable loss, for the radio you are incorporating into your product design must not exceed the requirements at 850 MHz and 1900 MHz as specified by the FCC grant for mobile operations and fixed mounted operations as defined in 2.1091 and 1.
Chapter 1 – Universal Socket Connectivity FCC Definitions Portable: (§2.1093) — A portable device is defined as a transmitting device designed to be used so that the radiating structure(s) of the device is/are within 20 centimeters of the body of the user. Mobile: (§2.
Chapter 1 – Universal Socket Connectivity Antennas Available from Multi-Tech Part Number ANQB-1HRA ANQB-10HRA ANQB-50HRA Quad Band Description Hinged Right Angle 800/900/1800/1900 MHz Cellular Antenna, 7.5" Hinged Right Angle 800/900/1800/1900 MHz Cellular Antenna, 7.5" Hinged Right Angle 800/900/1800/1900 MHz Cellular Antenna, 7.
Chapter 1 – Universal Socket Connectivity Additional Sources of Bluetooth Antennas Bluetooth antennas can be ordered from the following manufacturers. For the manufacturers listed without specific part numbers, be sure to select the antenna that meets the requirements/specifications. http://www.nearson.com (part number: S131AH-2450S) http://www.ead-ltd.com http://www.lairdtech.com/Products/ http://www.mobilemark.com http://www.woken.com.
Chapter 1 – Universal Socket Connectivity Features ● ● ● ● ● ● ● Tests 8 million time-frequency hypothesis per sec Open sky cold start 29 second Signal detection better than –161dBm Reacquisition sensitivity –155dBm Accuracy 2.5m CEP Multipath detection and suppression Supports active or passive antenna Underwriters Laboratories Required Global Positioning System (GPS) Statement Note the following information required by Underwriters Laboratories: Underwriters Laboratories, Inc.
Chapter 1 – Universal Socket Connectivity End Product GPRS Label Example: Host Device Model Identification Multi-Tech SocketModem Model Identification IMEI (International Mobile Equipment Identity) CDMA-C1 SocketModem Label Example: Note: The label is shown larger than actual size.
Chapter 1 – Universal Socket Connectivity Safety Notices and Warnings Note to OEMS: The following safety statements may be used in the documentation of your final product applications. Cellular Safety RF Safety The remote modems are cellular devices. It is important to follow any special regulations regarding the use of radio equipment due in particular to the possibility of Radio Frequency (RF) interference.
Chapter 1 – Universal Socket Connectivity Handling Precautions All devices must be handled with certain precautions to avoid damage due to the accumulation of static charge. Although input protection circuitry has been incorporated into the devices to minimize the effect of this static build-up, proper precautions should be taken to avoid exposure to electronic discharge during handling and mounting Your Responsibility This cellular device is your responsibility.
Chapter 1 – Universal Socket Connectivity EMC Requirements for the United States 47 CFR – FCC Part 15 Regulation – Class B This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to 47 CFR – FCC Part 15 regulations. The stated limits in this regulation are designed to provide reasonable protection against harmful interference in a residential environment.
Chapter 1 – Universal Socket Connectivity Waste Electrical and Electronic Equipment Statement Note to OEMs: The statement is included for your information and may be used in the documentation of your final product applications. WEEE Directive The WEEE directive places an obligation on EU-based manufacturers, distributors, retailers, and importers to take-back electronics products at the end of their useful life.
Chapter 1 – Universal Socket Connectivity Restriction of the Use of Hazardous Substances (RoHS) Multi-Tech Systems, Inc. Certificate of Compliance 2002/95/EC Multi-Tech Systems Inc. confirms that its embedded products now comply with the chemical concentration limitations set forth in the directive 2002/95/EC of the European Parliament (Restriction Of the use of certain Hazardous Substances in electrical and electronic equipment - RoHS) These Multi-Tech Systems, Inc.
Chapter 1 – Universal Socket Connectivity Information on HS/TS Substances According to Chinese Standards in English In accordance with China’s Administrative Measures on the Control of Pollution Caused by Electronic Information Products (EIP) # 39, also known as China RoHS, the following information is provided regarding the names and concentration levels of Toxic Substances (TS) or Hazardous Substances (HS) which may be contained in Multi-Tech Systems Inc.
Chapter 1 – Universal Socket Connectivity Information on HS/TS Substances According to Chinese Standards in Chinese 依照中国标准的有毒有害物质信息 根据中华人民共和国信息产业部 (MII) 制定的电子信息产品 (EIP) 标准－中华人民共和国《电子信息产品污染控制管理办法》（第 39 号），也称作中国 RoHS，下表列出了 Multi-Tech Systems, Inc.
Chapter 2 – SocketModem Cell & iCell GPRS (MTSMC-G2) Chapter 2 – SocketModem Cell & iCell GPRS (MTSMC-G2) The MTSMC-G2 is a serial to cellular quad-band GPRS SocketModem. It is a complete, ready-to-integrate SocketModem that offers standards-based multi-band GSM/GPRS Class 10 performance. It is based on industrystandard open interfaces and utilizes Multi-Tech’s universal socket design.
Chapter 2 – SocketModem Cell & iCell GPRS (MTSMC-G2) AT Commands Your Developer Kit CD contains AT Reference Guides for all embedded products. They are also available by email request to oemsales@multitech.com or through the online Developer’s Guide Request Form on the Multi-Tech website.
Chapter 2 – SocketModem Cell & iCell GPRS (MTSMC-G2) Category Compliance Warranty Note: Description keep alive, wake-up on caller ID, wake-up on ring, GPS tracking (GP model only) EMC Compliance FCC Part 15 EN55022 EN55024 Radio Compliance FCC Part 22 FCC Part 24 RSS 132 RSS 133 EN 301 511 EN 301 489-1 EN 301 489-7 AS/ACIF S042.1 AS/ACIF S042.
Chapter 2 – SocketModem Cell & iCell GPRS (MTSMC-G2) Mechanical Drawings MTSMC-G2 Build Multi-Tech Systems, Inc.
Chapter 2 – SocketModem Cell & iCell GPRS (MTSMC-G2) MTSMC-G2-Voice Build 40 Multi-Tech Systems, Inc.
Chapter 2 – SocketModem Cell & iCell GPRS (MTSMC-G2) MTSMC-G2-IP Build Multi-Tech Systems, Inc.
Chapter 2 – SocketModem Cell & iCell GPRS (MTSMC-G2) MTSMC-G2 GP (GPS) Build 42 Multi-Tech Systems, Inc.
Chapter 2 – SocketModem Cell & iCell GPRS (MTSMC-G2) DC Electrical Characteristics Units: Volts 5V DC Characteristics (VDD = 5V ± 0.25V) VDDMAX = 5.
Chapter 2 – SocketModem Cell & iCell GPRS (MTSMC-G2) Application Notes LED Interface The LED signal is used to indicate the working status of the SocketModem.
Chapter 2 – SocketModem Cell & iCell GPRS (MTSMC-G2) Microphone Inputs Note: For Voice Build Only. The MIC inputs are differential ones. They already include the convenient biasing for an electret microphone (0.5 mA and 2 Volts). This electret microphone can be directly connected on these inputs. The impedance of the microphone has to be around 2K. These inputs are the standard ones for a handset design. The gain of the MIC inputs is internally adjusted. The gain can be tuned from 30dB to 51dB.
